Question

How to print all armstrong numbers between 1 to 500 in Java

Answer 1

public class MyClass {
    public static int armstrong(int n) {
        int result = 0, remainder;  
         
        while(n > 0) {  
            remainder = n % 10;  
            n = n / 10;  
            result += remainder * remainder * remainder;  
        }  
        return result;
    }
    public static void main(String args[]) {
        // 153 = 1*1*1 + 5*5*5 + 3*3*3 = 153 = armstrong
        
        for (int i = 1; i <= 500; i++)
            if (i == armstrong(i))  
                System.out.println(i);   
    }
}
  
  
  
/*
run:
  
1
153
370
371
407
  
*/

 

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